插销

例句：

1. 1. The car door was held shut by a heavy metal pin.
   车门被一个沉重的金属插销牢牢地锁住了。
2. 2. The bolt on the door is broken, so we need to replace it.
   门上的螺栓断了，所以我们需要更换它。
3. 3. The screws holding the shelves together are loose.
   支撑架子的螺丝松动了。